Hitachi RAC-18WSPA, Service Manual

Page: 10 / 101

MAINTENANCE
Cleaning
and
maintenance
must
be
carr
ied
out
only
b
y
qualified
ser
vice
personal.
Bef
ore
cleaning,
stop operation and s
witch off the po
wer supply
.
CA
UTION
1.
AIR FIL
TER
Please clean the filter once about every two weeks. By
doing
so,
the
pow
er
rates
are
saved.
In
case the
air
filter
is
full
of
dust,
the
air
flo
w
will
decrease
and
the
cooling
capacity
will
be reduced.
Fur
ther
, noise ma
y occur
. Be sure to clean the filter f
ollo
wing the procedure belo
w
.
PR
OCEDURE
1
Open the front panel carefully and remo
v
e
the filter
.
2
V
acuum
dust
from
the
air
filter
using
v
acuum
cleaner
.
If
there
is
too
m
uch
dust,
w
a
sh
the
filter
with
a
detergent
and
rinse it thoroughly
. After that, dr
y it in the shade
.
3
Set
the
filter
with
“FR
ONT”
mar
k
facing
front,
and
slot them into the or
iginal state.
After
attaching
the
filters
,
push
the
front
panel
at
three
arro
w
por
tions
as
sho
wn
in
figure
and
close
it.
Do not w
ash with hot w
ater at more than 40°C
.The filter ma
y shr
ink.
When
w
ashing
it,
shak
e
off
moisture
completely
and
dr
y
it
in
the
shade;
do
not
e
xpose
it
directly
to the sun.
The filter ma
y shr
ink.
Don't oper
ate the unit without filter
.
F
ault ma
y occur if y
ou contin
ue
.
CA
UTION
–6–
2.
CLEANING OF FR
ONT P
ANEL
s
Remo
v
e
the front panel and w
ash with clean w
ater
.
W
ash it with a soft sponge
.
After using neutral detergent, w
ash thoroughly with
clean water
.
s
When front panel is not remo
v
ed, wipe it with a soft
dr
y cloth.
Wipe
the re
mote con
troller
thoroughly
with
a soft dr
y cloth.
s
Wipe the w
ater thoroughly
.
If w
ater remains at indicators or signal receiv
er of
indoor unit, it causes troub
le
.
Method of remo
ving the front panel.
Be sure to hold the front panel with both hands to detach and attach it.
CA
UTION
Remo
ving the F
ront P
anel
Attaching the F
ront P
anel
s
When the fr
ont panel is fully op
ened
with both
hands, push the r
ight ar
m to the inside to
release it, and while closing the front panel slightly
, put it out f
orw
ard.
s
Mo
v
e
the shafts of the left and r
ight ar
ms into
the steps
in the unit and securely inser
t them
into the holes
.
Shaft
Hole
s
Do not splash or direct w
ater to the body of the unit when cleaning it as
this ma
y cause shor
t circuit.
s
Ne
v
er use hot w
ater (abo
v
e
40°C), benzine
, gasoline
, acid, thinner or a
br
ush, because the
y will damage the plastic surf
ace and the coating.
3.
MAINTENANCE A
T
BEGINNING OF LONG OFF PERIOD
s s
Switch off
the po
w
e
r plug or tur
n
off the circuit break
er
.
B
E
N
Z
IN
E
T
H
IN
N
E
R
A C
I
D
Air
Blow
2
1
Shaft
Hole
2
1
ENGLISH
– 7 –
Run the unit b
y
setting the oper
ation mode to
(F
AN) and the f
an speed to HI f
or about half a da
y
on a fine da
y,
and dr
y the whole of the unit.